Bleaching, sterilizing, disinfecting, and deterging compositions



Patented Aug 9, 1

UNITED STATE BLEAcmNG, s'rEnmIzmG, DISINFECTING,

AND DETERGING COMPOSITIONS Edgar E. Hardy, Anniston, Ala., assignor to Monsanto Chemical Company, St.

poration of Delaware Louis, Mo., a cor- No Drawing. Application June 25, 1948,

Serial No. 35,297

(Cl. Z5299) 12 Claims. 1

The present invention relates to bleaching, sterilizing; disinfectant. and detergent compositions containing as the active constituent trichlorocyanuric acid.

An object of the invention is to provide compositions containing trichlorocyanuric acid in combination with alkaline salts, particularly alkalinephosphates, which are stable under ordinary conditions of storage and transportation and which, when dissolved in water, yield solutions suitable for bleaching, sterilizing and disinfecting.

Another object of the invention is to provide a disinfecting detergent for use in cleaning of containers, particularly metal cans used in the bulk transport of milk, cream and other milk products.

additional object of the invention is to provide a detergent for' use in hospitals or similar institutions; as well as in hotels and restaurants for dishwashing and other purposes.

TAfurther object is to provide a novel composition of matter which is a highly eflicient denture cleanser.

Other objects and advantages ofthe invention will be apparent to those skilled in the art as the description proceeds.

To the accomplishment of the foregoing and related ends, the invention comprises the features hereinafter disclosed, and particularly pointed out in the claims, the following description setting forth in some detail some of the various forms in which the principle of the invention may be applied.

- In accordance with the present invention, novel compositions of matter having oxidizing, bleachingydetergem and disinfecting properties are prepared by'intimately and uniformly mixing together in the substantially dry state trichlorocyanuric acid and alkaline salts such as sodium carbonate; sodium borate, sodium silicate, trisodium phosphate, tetrasodium pyrophosphate. sodium ti'iphosphate or mixtures of these. In addition to these two basic ingredients, wetting agents, synthetic detergents generally, soaps, fillers,fiabrasives and water softening agents of the inorganic or organic type may be incorporated in the composition to impart special properties.

i The proportions of the several ingredients may be variedbver a wide range depending upon the available chlorine desired and also the application involved. For example, trichlorocyanuric acid may be employed in amounts as low as a fraction of one per cent in the preparation of general surgical antiseptics and as high as ninety per cent or morewhen a powerful bleaching agent is desired. The other ingredients may be varied over 2 an equally broad range and thus may constitute a major or minor proportion of the final composition depending upon its ultimate use.

' The new compositions are characterized by a high degree of stability when dry and may be stored forflong periods of time and/or transported over considerable distances without substantial decomposition. When dissolved in water, the in! gredients of the mixture apparently react together to yield hypochlorite chlorine which is responsible for its efficient oxidizing, bleaching, disinfecting and sterilizing action.

The new compositions are preferably compounded and marketed as dry powders containing the various ingredients intimately and homogeneously blended together-so that a definite weight of material may be used to provide a solution of definite concentration. It is also within the scope of the present invention tosupply these mixtures in the form of tablets, sticks, cubes or agglomerates.

. For a more complete understanding of the present invention, reference is made to the following illustrative examples.

f Example I 8.5 parts of trichlorocyanuric acid (42.2% C1), 20 parts of sodium silicate powder (3.2 SiOzNazO) 40 parts of trisodium phosphate and 31.5 parts of sodium carbonate are intimately and uniformly blended together to provide a dry stable mixture containing about 3.5% by weight of. activechlqrine. This composition is adapted for use as a disinfecting detergent for cleaning containers. particularly metal cans used in the storage and transport of milk, cream and other dairy products.

Example II The following materials, when mixed together in the proportions indicated, provide a dry stable composition which serves as a highly effective denture cleanser.

Trisodium hydrogen pyrophosphate i 94.0 j

' the various ingredients of the compositions of the 'trichlorocyanuric acid. .However, it is preferred these are sodium'salts'of long chain alkyl sulfates 7 Per cent by chlorine in accordance with the following Trichlorocyanuric acid. (42.2% C1) 1.0 equation: I Sodium lauryl sulfate"; 5.0

9.52 parts of trichlorocyanuric acid, $1.98 parts of trisodium phosphate and 2.5 partsof starch or other suitable binder are lunifprmly blended together to form a dry stable mixture whichds; then pressed into cubes suitable for use as a household bleach. f 1 f As hereinbefore indicated; "the-proportions of present invention may be varied.f-widely, but in; general highly satisfactory results are obtainable with from about 0.5% to about 40% by eight oh I I II wherein represents sodium or potassium. to use this material in an amount corresponding i??? of fia 93 1 f g a to about 1% 'to about 26%by weightor: stated p g g ig :i 1*; inwell q l differently, in an amount'supplyingl from". about %2-f%ffi 163, LC nsilflqgrac 0.4% to about'10. 5%'-by weight/of active chlorine. fofin "Ifihyvv-vfit Hie vTh-evisalts employed mic-qmpoundingxthe new present specification itis to'b u rstood th t compositions are alkaline'salts such'as'alkali I 3 i1 metal and ammonium carbonates," phosph'ates, fg f ffi fi2933 55212 g g fi zffe l l i a borates or silicates, etc.-'whi ch salts are used 'in I -t-qm' suchamounts as will *giveto the final solution the Yen ion 5. i to -s i l fil w desired pI-I. Thus the proportions ofthese 'mlher-61111 efore "qlsclqs-edhput t F'e l 511 terialsare notcri tical'but may'fiuctua'te between equwa e? 9 4 1 so of t ap en ed lms, wide limits depending uponthe ultimate use of -What claim h m i 1 A substantial liar stable co l f The Wetting agents *and/or synthetic determ Q. gents u'rhich are'i 'use'd in making "the new coma er nt a 1y 9 9x51 qcyanurlg positions are"sulfdnated products such as sulee e?$91}???, l i llm PPPPQWfl-fi wfonated hydrocarbons;sulfated-higher alcohols 9? lfi li 9. 1 is zl elh et and "sulf onated oils. Illustrative examples "of Ya mm lllme l e diec z m 9 99m employed ln. an .amount var i to 90%by Weight such as sodium lauijyl 'sulfata sodium octad'e'cyl 'sulfate and sodium oleyl sulfat; "so'di'um saltsof o 'alkyl naphthalene sulf onic acids available comm- 9 phospha v a Emblem mercially 'under'the namezgNekalsyPerminals,

cyanuric ac d be ngemployed nan;amount ary- 'Merpentirie,'- Alkanol -B,' Oranit.a-Neomerpin,

w v carbon p a y d y' .A. substantially licompesitin Of ing the' resulting solution with emormem til .dodecyr and tetradecyl enzene sulfonic*acids";- ma er ist s e en fii e lo cyanuric- H mr lts" thj lkylae t s f acid and sodium trlphosphate, said triehlorqw z 'oief or; salicylic a id} in which the alkyl group 9 9 c b m l wedfl nan am u-nt varymaybe either octyl, de'cylfldo'decyl,'tetradecyli 9 1990 y Weigh hexadecyl for octadecyl or mixtures "thereof 1 (Lorol) {sodium salts of sulfonatedniineral oils such as Petrosol and Petrom'or; sodiumsalts of fecjmg! l jZ dmi f l p i said:

sulfosuccinic esters such as sodium dioctylsul- 9 9 v s en lly-0i an timate fqfsuccin'ate marketed under-"thenamenerdsol- 3 to; 9 O'I'rand urkeyi'red 011. In placebr the sodium Welghiof:mmmomqyanuricacid and-agdlywatem saltslofthelabwewettmg agents, gi b r 59 16. al al e :0mpound selected irom; the ie mtassium saltslii ay'b used 'aspwllasl ihe. grQ-upconsistingvofalkalimetal He ammoniilm' amineIa'nd otherweu.kmwnwatrjsbmbiegsaris l theiieotTbf allthe :w'eamg" agentsiliste d b' v'; '-.fiaAzsubstantially dry;-:-stable composition 0f: so: um dodecyl benzeneisulfonateis preferred. mgtpeyponglsmpge5s-enfiauyof trichlorocyanuric' .t'I'hei n'iountof Lweam agem' and/or. synthetic. l P isaidl =mpsitim ete gent-used may be varied, widembutingen l g i il h a f f whltimmv eral fromabout 1% to':. 10%-by.tveight-yieldssatis mg? qxldtzmgiibleachtngi"dlsimfecting""sterilizing; trichlorocyanuric lm. pp in from be weishtref a ive portions may be used asdesired. Trichlorocyanuric acid is prepared by dissolv-h ingi cyanuric' acid in the theoreticalquantity of a acid 'and ell-masculine ,sphletfi; aid com?) three atoms of the alkali have been'substitute cli positiom 'when tre'atd tvith u iaterjy i'elding a so-' acid, a wetting agent selected from the group 7 consisting of sulfonated and sulfated organic compounds and a water soluble alkaline compound selected from the group consisting of alkali metal and ammonium salts, said trichlorocyanuric acid being employed in amount varying from about 1% to about 26% by weight.

10. A substantially dry stable composition of matter consisting essentially of trichlorocyanuric acid, sodium dodecyl benzene sulfonate and trisodium phosphate, said trichlorocyanuric acid being employed in an amount varying from about 1% to about 26% by weight.

11. A substantially dry stable composition of matter consisting essentially of trichlorocyanuric acid, sodium lauryl sulfate and tetrasodium pyrophosphate, said trichlorocyanuric acid being employed in an amount varying from about 1% to about 26% by weight.

12. A substantially dry stable composition of matter consisting essentially of trichlorocyanuric acid, sodium dodecyl sulfobenzoate and sodium triphosphate, said trichlorocyanuric acid being employed in an amount varying from about 1% to about 26% by weight.

EDGAR E. HARDY.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,184,886 Muskat et al Dec. 26, 1939 2,263,948 Halvorson et al. Nov. 25, 1941 

1. A SUBSTANTIALLY DRY STABLE COMPOSITION OF MATTER CONSISTING OF ESSENTIALLY OF TRICHLOROCYANURIC ACID, AND A WATER SOLUBLE ALKALINE COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL AND AMMONIUM SALTS, SAID TRICHLOROCYANURIC ACID BEING EMPLOYED IN AN AMOUNT VARYING FROM 0.5% TO 90% BY WEIGHT. 